载银Cu_2O纳米球制备及其去除焦化废水中偶氮污染物研究

Synthesis of Cu_2O-Ag Nanospheres and Application of Removing AZO dyes in Coking Wastewater

通过沉淀法制备了Cu2O纳米球,然后采用化学还原法将纳米银颗粒负载在Cu2O纳米球表面,并通过扫描电子显微镜对其微观形貌和晶体形态进行了表征,最后以偶氮类染料甲基橙模拟常见的焦化废水污染物,在UV体系下分别用Cu2O纳米球和载银Cu2O纳米球进行了吸附与光降解实验,以研究其去除效果,实验结果表明:通过2h的光催化,模拟污染物的去除效率分别为74.1%及92.5%。

Thisarticlefirstly preparesCu2O nanospheresbymeansofoxidation-reduction methodand thenmakes thesilvernanoparticles load in the surface of Cu2O nanospheresbyusingchemical reduction method-Ag-Cu2O composite nanospheres aresynthesized. And then the article describesthe micro-structure and crystal-line type of spherical Ag-Cu2O nanospheres by scanning electron microscope（SEM）. Finally, usingmethyl Orange dye （MO） to simulate the common polltants in coking wastewater,it conductsadsorption and photo-degradation experimentsby respectively usingCu2O nanospheresand Ag-Cu2O composite nanospheres under theUV system tostudy the removal effects. The results show that the removal rates of Methyl Orange as sim-ulative pollutants are 74.1%and 92.5%aftertwo-hourphotocatalysis.